answersLogoWhite

0


Best Answer

To put it simply:

The blood in the aorta has to go all around the body. Blood in the pulmonary trunk has to go all around the lungs. The body is, obviously, larger than the lungs. This means blood going around the body needs to be "pushed" more. This is because there is more resistance. For example, it's harder to push a car for 1 mile, then it is to push it 1 metre.

Because the blood has to be pushed more, the heart (left ventricle) pumps it out at a higher pressure. Similarly, because the blood going around the lungs doesn't need to go so far, the heart (right ventricle) pumps it out at a lower pressure.

Because the blood in the aorta is at higher pressure than the pulmonary trunk, it needs to have thicker walls. For example a fire hose is thicker than a garden hose because it needs to transport water at a higher pressure.

The aorta contains large amount of smooth muscle and elastic tissue to help it cope with the high blood pressure.

User Avatar

Wiki User

8y ago
This answer is:
User Avatar
More answers
User Avatar

Wiki User

14y ago

The wall of the pulmonary artery is thicker because it carries blood to the lungs at a pressure of around 15mmHg while the vena cava returns blood to the heart at a pressure that is less than 8mmHg.

This answer is:
User Avatar

User Avatar

Wiki User

13y ago

When the right ventricle contracts if forces blood into the pulmonary artery.

When the left ventricle contracts it forces blood into the aorta.

The right ventricle has a much thinner muscle wall so its contraction is weaker so less stretching force is exerted on the pulmonary artery so it does not need to be as thick.

Compared with the left ventricle which has thick strong walls that can contract powerfully which requires the aorta to be strong and thick to withstand the huge pressure increase when the left ventricle contracts to force blood out.

This answer is:
User Avatar

User Avatar

Wiki User

13y ago

the walls of the aorta are generally thicker than the walls of the pulmonary artery. The wall thickness is usually a reaction to the pressure the cells of the vessel walls feel. In adults, the average pressure of the pulmonary artery is usually in the range of 20 mm of Mercury or so while the average in the aorta is around 80-100 (this is between the two numbers measured in your blood pressure)

This answer is:
User Avatar

User Avatar

Wiki User

13y ago

The blood pressure passing through the pulmonary trunk from the right ventricle is significantly less than that of the blood pressure passing through the aorta form the left ventricle.

This answer is:
User Avatar

User Avatar

Wiki User

12y ago

the aorta is much thicker and larger due to it's need to sustain higher pressures from the left ventricle.

This answer is:
User Avatar

User Avatar

Wiki User

12y ago

The wall of the aorta is thicker because the blood that flows through it is at a higher pressure than the blood that flows through the pulmonary trunk.

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What is the significance of the difference in thickness between the aorta and the pulmonary trunk?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

What is the significance of the difference in thickness between the wall of the aorta and the wall of the pulmonary trunk?

I answered this question last week... but anyway... the aorta has to accommodate much higher pressures from the left ventricle, ergo it is thicker.


What is the difference between COPD and pulmonary fibrosis?

what is the differencebetween copd and pulmonary fibrosis


What is the difference between pulmonary and alveolar ventilation?

nothing


What is the Difference between schedule 10 and 10s piping?

please tell me the difference between thickness


What is the difference between pulmonary system and coronary system?

Coronary or cardio is blood flow. Pulmonary or respiratory is breathing.


What was the historical significance of segregation?

the significance of segregation was to show the difference between the people


What is the difference between justification and significance?

advantages of the study


What is the reason for the difference in the thickness between the left and right ventricles?

Heart


What is the difference between depth and thickness?

The depth is how deep the soil is and the thickness is the lkayer of the soil that is covered with how much the soil covering it


What is the Difference between b and c class MS pipe?

The main difference is the thickness of the pipe Compare to A Class pipe B Class pipe thickness is more.Like that Compare to B class pipe C Class pipe thickness is more.


What is the difference between wall thickness and schedule?

There is no difference, its just a different way of saying the same thing


What the difference between the pulmonary arteries and other arteries in the body?

they carry deoxygenated blood